摘要
本文采用冬季太阳高度角最大,太阳高度角随纬度变化而变化这一原理,确定牛舍棚面角的计算公式为C=B-h(B:为50°临界值,h为太阳高度角),在冬季舍外温度达-20～-30℃时夜间舍内温度达7～8℃以上。空气湿度、气流速度、光照、有害气体NH_3和CO_2等诸参数均在卫生学要求的范围内,用于冬季养牛是完全可行的,有推广前景。
In this paper using the principle that the sun high angle is the smallest in the winter the summer and the largest in summer and the sun high angle changes with different latitude, we defined the computing formula of the shack angle of the cattle shed. It is C=B-h(B stands for 50℃ critical angle, h stands for the sun high angle). When tempera-ture of the Cattle shed outside is -20--30℃) and temperature of Cattle shed is 7-8℃ at night, air humidity, airflow ve-locity, illuminance, harmful gas NH3 and CO2 are all within the requirement of environment, so this kind of cattle shed is completely feasible and prosperous for spreading.
出处
《中国奶牛》
北大核心
2003年第6期49-51,共3页
China Dairy Cattle
